Find category which is already exist.
for example: when you are standing in category D in path: Root\A\B\C\D, you do some action
(add new category, add question, go out to category C or B) but another moderator delete
category C (or B, A).
Created by The eXo Platform SARL
Author : Philippe Aristote
philippe.aristote@gmail.com
An item in a UIFormInputItemSelector
Each item is actually held in a SelectItemCategory, which is held by the UIFormInputItemSelector